From: Ingo Molnar <mingo@elte.hu>
To: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org,
tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
michael@free-electrons.com
Subject: Re: [PATCH 1/1] [x86] Configuration options to compile out x86 CPU support code
Date: Fri, 15 Aug 2008 16:18:55 +0200 [thread overview]
Message-ID: <20080815141855.GB12954@elte.hu> (raw)
In-Reply-To: <1217929519-10527-1-git-send-email-thomas.petazzoni@free-electrons.com>
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com> wrote:
> This patch adds some configuration options that allow to compile out
> CPU vendor-specific code in x86 kernels (in arch/x86/kernel/cpu). The
> new configuration options are only visible when CONFIG_EMBEDDED is
> selected, as they are mostly interesting for space savings reasons.
>
> An example of size saving, on x86 with only Intel CPU support:
>
> text data bss dec hex filename
> 1125479 118760 212992 1457231 163c4f vmlinux.old
> 1121355 116536 212992 1450883 162383 vmlinux
> -4124 -2224 0 -6348 -18CC +/-
>
> However, I'm not exactly sure that the Kconfig wording is correct with
> regard to !64BIT / 64BIT.
applied to tip/x86/cpu, thanks Thomas. (I've done a trivial cleanup:
converted the macro to an inline.)
Peter, do you like this version of the patch or would you like further
improvements?
Ingo
next prev parent reply other threads:[~2008-08-15 14:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-05 9:45 [PATCH 1/1] [x86] Configuration options to compile out x86 CPU support code Thomas Petazzoni
2008-08-15 14:18 ` Ingo Molnar [this message]
2008-08-15 14:38 ` Ingo Molnar
2008-08-18 10:33 ` [PATCH] [x86] Make movsl_mask definition non-CPU specific Thomas Petazzoni
2008-08-18 10:33 ` [PATCH] [x86] Move cmpxchg fallbacks to a generic place Thomas Petazzoni
2008-08-18 14:07 ` Ingo Molnar
2008-08-15 20:36 ` [PATCH 1/1] [x86] Configuration options to compile out x86 CPU support code H. Peter Anvin
[not found] <20030410181011$6d15@gated-at.bofh.it>
[not found] ` <aXrl4-2FX-1@gated-at.bofh.it>
2008-08-09 14:08 ` Bodo Eggert
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